Mon 21 Jul 22:43:21 CEST 2025

js/ui/cordova/plugins/cordova-plugin-file/www/blackberry10/truncate.js

@@ -0,0 +1,74 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+*/
+
+/* 
+ * truncate
+ * 
+ * IN:
+ *  args
+ *   0 - URL of file to truncate
+ *   1 - start position
+ * OUT:
+ *  success - new length of file
+ *  fail - FileError
+ */
+
+var resolve = cordova.require('cordova-plugin-file.resolveLocalFileSystemURIProxy'),
+    requestAnimationFrame = cordova.require('cordova-plugin-file.bb10RequestAnimationFrame');
+
+module.exports = function (success, fail, args) {
+    var uri = args[0],
+        length = args[1],
+        onSuccess = function (data) {
+            if (typeof success === 'function') {
+                success(data.loaded);
+            }
+        },
+        onFail = function (error) {
+            if (typeof fail === 'function') {
+                if (error && error.code) {
+                    fail(error.code);
+                } else {
+                    fail(error);
+                }
+            }
+        };
+    resolve(function (fs) {
+        requestAnimationFrame(function () {
+            fs.nativeEntry.file(function (file) {
+                var reader = new FileReader()._realReader;
+                reader.onloadend = function () {
+                    var contents = new Uint8Array(this.result).subarray(0, length);
+                        blob = new Blob([contents]);
+                    window.requestAnimationFrame(function () {
+                        fs.nativeEntry.createWriter(function (fileWriter) {
+                            fileWriter.onwriteend = onSuccess;
+                            fileWriter.onerror = onFail;
+                            fileWriter.write(blob);
+                        }, onFail);
+                    });
+                };
+                reader.onerror = onFail;
+                reader.readAsArrayBuffer(file);
+            }, onFail);
+        });
+    }, onFail, [uri]);
+};